Fewer than one-half of Facebook’s 900 million-plus monthly average users take advantage of its groups functionality, and many say it is the most underused feature. But this may soon change, and we may see a spike in groups users.

All Facebook groups will now be able to send files, Mashable reported, adding that the update was released to some groups today, and it will be offered to the remaining groups over the next few days.

Excluding .exe (executable) and music files, groups users will be able to upload a maximum of 25 megabytes worth of files, reported Mashable.

Groups for colleges and universities, which debuted in April, already offer the file-sharing function. However, in order to access it, school-based e-mail addresses ending in .edu are required.

Users will be able to report files as a way for the social network to try to prevent sharing of copyrighted or malicious files.

Readers: Will the ability to share files via Facebook groups entice you to use the service?

Laptop file-sharing image courtesy of Shutterstock. Screen grab courtesy of Mashable.